Global Patent Index - EP 1576452 A4

EP 1576452 A4 20070808 - COMMUNICATION SESSION ENCRYPTION AND AUTHENTICATION SYSTEM

Title (en)

COMMUNICATION SESSION ENCRYPTION AND AUTHENTICATION SYSTEM

Title (de)

KOMMUNIKATIONSSITZUNGSVERSCHL SSELUNGS- UND AUTHENTIFIKATIONSSYSTEM

Title (fr)

SYSTEME DE CHIFFREMENT ET D'AUTHENTIFICATION DE SESSION DE COMMUNICATION

Publication

EP 1576452 A4 20070808 (EN)

Application

EP 04782738 A 20040901

Priority

  • US 2004028313 W 20040901
  • US 65350603 A 20030902

Abstract (en)

[origin: US2005050323A1] An interactive mutual authentication protocol, which does not allow shared secrets to pass through untrusted communication media, integrates an encryption key management system into the authentication protocol, so that key management becomes an essential part of the authentication protocol itself. The system provides a secure distribution of a secret session random key used in symmetric cryptography. Successful exchange of this encryption key allows for secure transit of the protocol data over communication lines in encrypted form, permitting explicit mutual authentication of the connected parties. The post-authentication stage of the communication session can use secure encryption for the data exchange, since each party has already obtained the secret session random key.

IPC 1-7

H04L 9/08

IPC 8 full level

H04L 9/08 (2006.01); H04L 9/32 (2006.01)

CPC (source: EP)

H04L 9/0844 (2013.01); H04L 9/3273 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

US 2005050323 A1 20050303; US 7506161 B2 20090317; EP 1576452 A2 20050921; EP 1576452 A4 20070808; WO 2005022359 A2 20050310; WO 2005022359 A3 20061026

DOCDB simple family (application)

US 65350603 A 20030902; EP 04782738 A 20040901; US 2004028313 W 20040901